#!/usr/bin/env python
# -*- coding: utf-8 -*-

# MySQL Connector/Python - MySQL driver written in Python.
# Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved.

# MySQL Connector/Python is licensed under the terms of the GPLv2
# <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most
# MySQL Connectors. There are special exceptions to the terms and
# conditions of the GPLv2 as it is applied to this software, see the
# FOSS License Exception
# <http://www.mysql.com/about/legal/licensing/foss-exception.html>.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

from datetime import time

import mysql.connector

"""
Example using MySQL Connector/Python showing:
* How to save timestamps including microseconds
* Check the MySQL server version

NOTE: This only works with MySQL 5.6.4 or greater. This example will work
with earlier versions, but the microseconds information will be lost.

Story: We keep track of swimmers in a freestyle 4x 100m relay swimming event
with millisecond precision.
"""

CREATE_TABLE = """
CREATE TABLE relay_laps (
teamid TINYINT UNSIGNED NOT NULL,
swimmer TINYINT UNSIGNED NOT NULL,
lap TIME(3),
PRIMARY KEY (teamid, swimmer)
) ENGINE=InnoDB
"""

def main(config):
    output = []
    cnx = mysql.connector.Connect(**config)
    if cnx.get_server_version() < (5,6,4):
        output.append(
            "MySQL %s does not support fractional precision"\
            " for timestamps." % cnx.get_server_info())
        return output
    cursor = cnx.cursor()
    
    try:
        cursor.execute("DROP TABLE IF EXISTS relay_laps")
    except:
        # Ignoring the fact that it was not there
        pass
    cursor.execute(CREATE_TABLE)
    
    teams = {}
    teams[1] = [
        (1, time(second=47, microsecond=510000)),
        (2, time(second=47, microsecond=20000)),
        (3, time(second=47, microsecond=650000)),
        (4, time(second=46, microsecond=60000)),
    ]
    
    insert = "INSERT INTO relay_laps (teamid,swimmer,lap) VALUES (%s,%s,%s)"
    for team, swimmers in teams.items():
        for swimmer in swimmers:
            cursor.execute(insert, (team, swimmer[0], swimmer[1]))
    cnx.commit()
    
    cursor.execute("SELECT * FROM relay_laps")
    fmt = "%2s | %2s | %s"
    for row in cursor:
        output.append(fmt % row)
    
    try:
        cursor.execute("DROP TABLE IF EXISTS relay_laps")
    except:
        # Ignoring the fact that it was not there
        pass
    
    cursor.close()
    cnx.close()
    
    return output

if __name__ == '__main__':
    #
    # Configure MySQL login and database to use in config.py
    #
    from config import Config
    config = Config.dbinfo().copy()
    out = main(config)
    print '\n'.join(out)

